Irrigation pipe



Jan. 14, 1930. H. F.YCONGABLE 1,743,431

IRRIGATION PIPE- Filed July 6, 1925 F Y W W T INVENTOR. H6. 2 HENRYFTCoNGABLE 1 x ATmRNEYs.

Patented Jan. 14, 1930 UNITED. STATES HENRY n. cono'annn, on oaxnanncann'omvm IRRIGATION PIPE Application. filed July 6,

The present invention relates to improvements in irrigation pipes andhas particular reference to improved means for joining a plurality oflengths so as to establish subistantially water-tight joints between thesame. The present'application covers a part of the device described inmy co-pending application, Serial Number 19,330.

It is proposed in the present application to disclose a pipe length soconstructed that a plurality may be easily telescoped one on the otherwhereby the length of the pipe as a whole may be extended indefinitely.It is further proposed to form each len th of two sections, one bein ofconsidera le length and being made 0 comparatively light material andthe other being short and tapered and made of heavy material, thetapere'd end serving as a joint between two long sections.

For this purpose it is permanently secured to one of the long sectionsby means of an enlarged cylindrical portion set off from the lar 0 endof the taper and fitting over one en of thelong section, while thesecond long section is telescoped over the small end of the taper and isproperly reinforced at the end engaging with the taper to resistexpansion. A certain amount of expansion, however, may be taken care ofby effecting a deeper engagement between the taper and the secondsection.

It is further proposed to provide a tapered section made without seamand shaped from a disc shaped blank by die pressing.

It is further proposed to provide the tapered section with a cylindricalset-ofl at the large end thereof, the set-oft providing an abutment forthe extreme end of a long section telescoped into the cylindrical end ofthe tapered section.

Further objects and advanta es of my invention will appear as thespecification proceeds.

The preferred form of my invention is illustrated in the accompanyingdrawing, in which Figure 1 shows a longitudinal section through a jointbetween two long sections of pipe and Figure 2 a blank from which aseamless taper is formed for joining the two lengths.

1925. Serial mi. 41,688.-

While I have shown only the preferred form of the invention, it shouldbe understood that various changes or modifications may be made withinthe scope of the claims hereto attached without departing from the 5'5spirit ofthe .invention.

Referring to the drawings in detail, the 1on sections 1 of my irrigationpipe are ma e cylindrical in form and terminate at one end in a'flange2turned back on the pipe to provide a rim 3 which latter is spaced fromthe body of the pipe to accommodate .a ring i interposed between the rimand the body. The ring is of somewhat heavier material than the pipe andis preferably riveted thereto as shown at 6. The ring and the overturnedrim co-operate in reinforcing the end of the pipe and in resistingexpansion of the latter to some extent when the same is driven on thesmall end of the taper as shown in the 'drawing.

The other end of the long section is uniform with the body of the sameand preferably presents a tapered end face as shown at 7.

The tapered section 8 is designed for permanent junction with one of thelong sections and for detachable connection with a second long section.It is preferably made seamless and formed from a disc-shaped blank shownat 9. This blank is die-pressed to form a cup and then by continuouspressing is further drawn to form a taper as illustrated in Figure 1.The large end of the taper is set ofl? into a cylindrical portion bypressing 'or spinning the metal outwardly and forms an annular flangeadapted to serve as an abutment for the end of a long section telescopedinto the taper section as well as for the other end of a second longsection driven on the outside of the conical section when the secondsection has expanded sufficiently to reach the base of the cone. Rivets11 may be used for permanently fastening the cylindrical portion of thecone to the end of the long section.

In making the tapered section from a blank in the manner described, therelatively soft metal of the blank becomes hardened in the drawingoperation, giving a stifi, rigid 'ingaban tag end.

ving described my invention, I claim 1. In a ipe connection, a pipesection hav- 5 mounted adjacent the end thereof, the edge of said pipesection being turned back and bearing on said band, a frustroconicalconnecting member driven into the pipe section to form a frictionaljoint, the arge end of said conical connectin mmber beinghsiecured to asecond pipe sect1on.

2. a pipe connection, a pipe section having a rein orcin band mountedsecurely ad-- jacent the and t ereof, the ed e of said pipe connectionbeing turned bac and bearing on said band, a frusto-conical connectingmember having a large end with outer diameter greater than the innerdiameter of the ipe section and a small end with outer diameter lessthan the inner diameter of the section, said conical connecting mem rdriven into the pi section to form a friction joint, the large arge endof said conical connecting member being connected with a second pi esection.

In testimony whereo I aflix m si HENRY F. CO G ature. LE.

